House fly
bluntly rounded ends, about 8 mm long and change in colour from yellow to red, to brown, to black as the pupa ages. New adult flies will emerge as early as two [...] and home. Believed to have originated in central Asia, the insect expanded its range worldwide long ago as a commensal organism to human populations; the [...] other saprophagous, coprophagous or necrophagous flies , does not cause any direct damage to animals or buildings, they are considered a serious pest because: